> Correct me if I'm wrong, but the Talmud is basically the collected notes on the study of the Torah, which was was supposedly (capital-R) Revealed by a supernatural authority on Mount Sinai.

If you're Orthodox, both the written Torah and the Oral Torah (Talmud) were capital-R Revealed by a supernatural authority at Mount Sinai.

Yes, the study notes for the book were revealed with the book. If you find this confusing, well, go pick up Rudin's Principles to Mathematical Analysis.